<!DOCTYPE html>
<html>
  <head>
    <meta charset="utf-8">
    <title></title>
    <script>
    function show(a, b=5, c=12){
      console.log(a, b, c);
    }

    show(99, 19, 88);
    </script>
  </head>
  <body>

  </body>
</html>
